History of run 6 changes

In crates/oh/src/main.rs, lines 569–656 on f8cf54e9987922e4f4ffa0c3dcbfa5118129edd5c3ac3d2a0f75ea51f36eb1fc. Every change that wrote or deleted one of these lines, or deleted a line from between them. Exact, because each line keeps its identity across edits; edits elsewhere in the file are not here. Also: oxy log -L 569,656:crates/oh/src/main.rs.